Vertical drilling machine 2A135: Specifications
Vertical drilling machine model 2A135 is successfully used by many modern specialists in metalworking, but few of them know, that the production of this equipment Sterlitamak machine-tool plant stopped in 1965 year. Of course, the machine 2A135 was replaced by improved ones, more modern models, but, despite this, he is still very popular.
Appearance of the 2A135 machine of 60 years of release (click to enlarge)
Where machine 2A135 is used
Machine 2A135, belonging to the category of universal vertical drilling equipment, used not only for drilling holes, but also for the effective implementation of a number of other technological operations:
- reaming;
- deployment;
- countersinking;
- internal thread cutting;
- trimming the edges of parts (special tools are used for this purpose).
On this vertical drilling machine due to the small dimensions of his desktop can be processed workpieces of relatively small size. Technical capabilities of the machine 2A135 allow to process on it preparations from pig-iron, different grades of steel and non-ferrous metals. Standard drills can be used as cutting tools when working on this machine, threaded taps and special tools for machining the edges of parts (chamfering).
Types of work, performed on the machine
Among the technical features, which distinguishes the machine 2A135, the following should be highlighted.
- The gearbox allows you to adjust them 9 stairs. Spindle speed, provided by such a box, may vary in the range 68-110 about / min.
- Holes up to 1 mm in diameter can be drilled on this vertical drilling machine 50 mm.
- Control of the machine is carried out completely in manual mode, this equipment does not have the ability to install automated control systems.
- There is a reversible device in the design of the machine, which allows the spindle to rotate in different directions. This technical feature allows you to use on the vertical drilling machine 2A135 machine taps for threading.
Machining of the workpiece on the drilling machine 2A135
Carbide cutting tools will be required for machining hard materials on this machine. Given the not too high power of the equipment, processing of such materials should be performed at low speeds of rotation of the cutting tool.
Vertical drilling machine model 2A135 can be equipped with additional mechanisms and devices, which makes it possible to use it to equip businesses, producing their products in large series.
Technical characteristics of the machine 2A135
Below you can get acquainted with the main characteristics of the vertical drilling machine 2A135.
machine characteristics
Below you can download free technical documentation for the machine 2A135, namely the passport of the machine or the operation manual.
Passport of the vertical drilling machine 2A135:
download
Design features of the model
At the moment, when the machine in question was put into production, several technological innovations were implemented in its design, which had the best effect on its technical characteristics. However, the most notable feature of this device, thanks to which it is still very popular today, there is reliability.
Drill device 2A135
The load-bearing elements of the vertical drilling machine model 2A135 are a massive base plate and a vertical column. To give the structure rigidity, massiveness and immunity to vibration loads are used cast iron elements.
The spindle head of the machine is mounted on a vertical support column, which also houses the drive motor and mechanism, which is responsible for shifting gears. Though, that the vertical drilling machine of this model is difficult to call modern, all its structural elements and controls are ergonomically located, thanks to which it is very convenient to work on it.
Spindle assembly of the machine
Among the design features of the vertical drilling machine model 2A135 should be noted the following.
- Feeding of the cutting tool after its fast bringing to a surface of a detail is included automatically. The feed automatically shuts off then, when the tool has reached the required drilling depth.
- Automatic shut-off of the tool feed when it reaches the required drilling depth is possible thanks to a special stop mechanism with stop, which performs including protective functions (prevention of the tool from breakages at critical loadings).
- To ensure high accuracy and smooth operation, the spindle of the machine 2A135 is fixed in the supports with precision bearings.
- According to the operation manual, V-belt drive pulleys can be changed and thus set such spindle speed limits, which are optimal for solving a certain technological problem.
- Turning on and off feeds can be performed by the same steering device, which is responsible for the rapid movement of the spindle. This reduces the time to perform ancillary operations.
- Machine table, on which the workpiece is fixed, can move in a horizontal plane. This movement can be set during processing, without turning off the device.
The scheme of cooling of the machine
The principle of operation of individual components and units of the machine
The positioning of the cutting tool relative to the workpiece and the rapid travel of the spindle are due to the main movement, carried out by the working head in the vertical direction. You can also change the position of the part due to the movement of the desktop, committed by him in the horizontal plane. Characteristics of the vertical drilling machine 2A135, like any other equipment, are determined by the features of the kinematic scheme.
Kinematic diagram of the vertical drilling machine model 2A135
The electric motor is responsible for the rotation of the spindle head, whose power is 4,5 kw. Torque transmission from the motor, change of parameters of rotation of a drilling head is carried out at the expense of a transmission and elements of a V-belt transfer. Maximum spindle speed, provided by these elements of the kinematic scheme, can reach 1070 about / min.
Wiring diagram of the machine
According to the passport of the machine, when working on it you can choose one of 12 working feeds. Because two of them are identical in their parameters, then in fact all of them 11. A special box is responsible for changing their parameters, which is actuated by a series of gears and a safety clutch from the spindle of the installation. The steering mechanism and a special handle are used to control the movement of feeds, which allows you to change the parameters of such movement.
Gearbox and gearbox of vertical drill 2A135
Consider the design features of the main components of the vertical drilling machine of this model.
- The gearbox of the machine is 4 shaft with movable gear units located on them, which allows you to adjust the speed of rotation of the spindle assembly of the equipment 9 stairs.
- A cam clutch is provided in the drive box drive, which protects the elements of the node from damage in case of critical loads. This structural element is also needed for this, to automatically turn off the feed when working on stops.
- In the electrical circuit there is protection against short circuit, there is a special bracket, by means of which the equipment is connected to the grounding circuit.
- The design of the machine does not provide a mechanism for quick stop of the motor, which is one of the disadvantages of the device. To make such a stop, the gear lever must be moved to the neutral middle position.
Technical capabilities of the device
The vertical drilling machine of this model differs in rather small dimensions (124х81х250 cm), but sufficient mass (1300 kg) for, to ensure its stability during installation and use.
Installation dimensions and foundation diagram
Dimensions of details, which can be processed on such a machine, are determined by the following characteristics of the equipment. The distance from the end of the spindle assembly to the surface of the desktop varies within 0-750 mm, the spindle assembly may be at a distance from the base plate 705-1130 mm. Departure of the machine (the distance from the axis of the spindle assembly to the racks of the equipment rack) is 300 mm, and the dimensions of the desktop - 450x500 mm.
To ensure the fixation of the workpiece on the surface of the desktop, there are three T-shaped grooves. As mentioned above, it can move in a horizontal plane (the maximum value of such movement is 325 mm).
According to the passport of the machine 2A135, this equipment is characterized by the following parameters.
- The value of the maximum movement of the spindle sled - 200 mm.
- Maximum spindle travel - 225 mm.
- The speed of rotation of the spindle assembly can vary from 68 to 110 about / min.
- Number of possible speeds - 9.
- The torque cannot exceed the value 400 kgm.
- The conical size of the hole in the spindle assembly corresponds to the Morse standard 4.
- The spindle feed per rotation of the node can vary in the range 0,115-1,6 mm. With, as already mentioned, you can choose one of 11 vertical feeds.
- Effort, created by the spindle assembly when performing the feed, cannot exceed 1600 kg.
